'Lord of Hosts' in the Bible

Therefore as I live, says the LORD of hosts, the God of Israel, Surely Moab shall be as Sodom, and the children of Ammon as Gomorrah, even the breeding of weeds, and saltpits, and a perpetual desolation: the residue of my people shall plunder them, and the remnant of my people shall possess them.

This shall they have because of their pride, because they have reproached and boasted themselves against the people of the LORD of hosts.